San Francisco in July
Cool summer fog
- Temperature
- 12–19°C
- Crowds
- High
- Prices
- $$$$
+Long days.
–Cool, gray and busy.
July is cooler than many visitors expect, with fog and peak summer crowds.
San Francisco vs San Diego in July
San Diego edges it in July. San Francisco averages 12–19°C with high crowds; San Diego 19–24°C with high crowds.
By Daan · Last reviewed October 2026
San Francisco and San Diego
The verdict for July
- WeatherSan Diego has the better weather6/10 vs 8.5/10
- CrowdsVery similarHigh vs High
- PricesVery similar$$$$ vs $$$$
- OverallSan Diego comes out ahead5/10 vs 6.5/10
San Diego in July
Summer and Comic-Con
- Temperature
- 19–24°C
- Crowds
- High
- Prices
- $$$$
+Sunny, warm beach days.
–Busy and expensive, especially around Comic-Con.
July brings reliable sun, beach days and Comic-Con, which fills downtown hotels.
Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.
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